"......I thought purchasing a used class C RV would be more convenient since many of my trips are long distance (I don't like smuggling in 10+ dogs into hotel rooms!)"
Wait until you try that in a Campground. they have pet limits: numbers (2 or less) weight (25#---45#) and BREED restrictions (Pitbulls, Dobies, Shepards, Rotties, Chows, Mastif, are common 'aggressive banned') PLUS keeping that many dogs QUIET
AZ has a LOT of 'banned breeds' Pitbulls galore
We looked for months for a rescue '''''''finally a Border Collie Mix.
I commend your efforts but your thought process is off base'
A toyhauler would be a good travel platform but CGs are going to be REAL problem.
Overnighting at Rest Areas, Walmarts etc might be better options. No pet limits and FREE
Best of luck.